Nut-lock.



PATENTE D JUNE 4, 1907.

v No. s55,779..

-P. R.'HINKLB. NUT LOCK. APPLICATION FILED SEPT. 20,1906.

amen-ton P If m 351;}- M @flozucu S I QXWCMQ we a unrrnn" srnrns mrnur "orrion PARIS R.-H1NKLE, or MAYER, ARIZONA TERRITORY, ASSIGNOR or O NE- HALF TO 1-1; A. CLARKE, or MAYER, ARIZONA. TERRITORY.

i NUT-LOCK Specification .of Letters Patent.

Patented June 4, 1907.

A pplication filed September 20, 1906. Serial No- 335.346.

citizen of the United States, residing at;

Mayer, in the county of Yavapai and Arizona Territory, have invented .certain new and useful Improvements in Nut-Locks, of which the followingis a full, clear, and exact description.

My invention relates to means for locking threaded members against reverse. movement relatively to one another, for example, in the use ofnut locks, turn buckles, flanges, sleeves, and all similar devices which have a threaded engagement between two parts.

The principal object of the invention is to provide a lock which is operative to prevent any reverse movement of the en aged parts when roperly secured, and furt er to perform t function with unvarying efficiency, regardless of position, vibration, shocks, or ot er unfavorable influences.

I 1 With this and other objects in view, the

invention consists in the features of construction hereinafterset forth and claimed.

In the drawings: Figure 1, is a plan view of a nut embodym the principles of'my in vention in unlocke enga ement upon a bolt Fig; 2 a similar'view showing'the parts in 100 ed relation," Fig. 3 is a section on the line The engagement of the absence. of special locking devices, is

a merely frictional one, and for the purposes of construction where the workis exposed to shocks and vibration, an engagement that depends for its permanence upon mere surface friction is unsatisfactory. In order to overcome this defect, various lockingmeans have been proposed,- but so'far as I am aware they have acted in the way of a stop to limit re verse rotation,'rather than alock to abso-' lutely' prevent it. For example, the ordinary ball clutch has beenadapted .to the pur poses ofa nut look, but without special all threaded parts,

sign, 1 indicates a male threaded member, for example, a bolt, and 2 denotes. a nut or femalethreaded member of anysort, to which I have illustrated the features-of my invention applied. While the locking devices are her, it is evident that this is not essential.

convenient practical construction, in that it enables the locking devices to be manipulated Whenever desired. While I consider it best to have the recesses extend inward from the end face, it is possible to have them some part of the exterior of the member.

of any description, which are respectively contained in the cavities 3. The .form and size of these pellets is such as to become wedged inward by the eccentric wall of the iayities 3,. so as to bite-the threads of the o t.

For the purpose of locking the pellets 4; in their biting relation against the screw threads I provide certain means, which constitute an important feature "of the invention. In Figs. 2 and 3 I have illustrated plugs 5 for this purpose, conveniently of wood, lead or soft'material', Whiclrare inset in lab. cavities behind the pellets 4, so as to keep such pelletsin their bitihgrelation. The operation sition desired, and thereafter insert the plugs 5 behind the pellets 4.. When it becomes necessary to again loosen the nut, the pelletsare engaged by some instrument and pressed into the body of the soft plugs so as to become loosened from the threads. Then the nut may be readily unscrewed, as above stated-but unless the locking' means-is so manipulated, it is evident that no reverse rotation can take place, even under severe shocks and vibration, such as wouldbe incident-:to use in machinery.

thecoarseness of the threads. Inasmuch as parts are designated by the same reference In the drawings the nut '2 is shownre- The section from the end face of the member is .ia'

made in any way so'asto be accessible from 4 indicates balls, rollers or rounded pellets is to tighten the nut upon the bolt to the po- A feature of ,the inventlon lies the rela tion between the diameter of. the pellets and.

'the cavities 3 are accessible from the exte-" shown applied to the female threaded memplacement of the pellet. 2

rior, it is important that the pellets are firmly heldagainst dislodgment when in use. This'is secured by having them quite small with'respect to the pitch of the threads, as shown in Fig. 3. It will be seen thatwh'en the pellets are in operative or looking relation, that the threads form walls or barriers to effectually preclude any longitudinal dis-' What I dam, is r 1. A; means for locking a male and a female threaded member againstreverse movement relative to one another, comprising a pellet located ina cavity between the members, and an inelastic plug inset in such cavity and contacting with such pellet.

2. A means for locking a male and-a female threaded member againstreverse movement relative to-one another, comprising a pellet located in a cavity between the members,

and a plug of soft inelasticmaterial insetin such cavity and contacting ith-such pellet; 3. A means for locking, a male and afemale threaded member against reverse movement relative to one another, comprising a pellet I and in contact with the purpose set forth.

5. In combinatiom-a bolt, a nut therefor,

with the bolt threads.

located in a .cavity, between the members,

contacting with such pellet. Y 4. In combination with a, male .threaded member, a female threaded member havinga wedge shaped rYcess accessible from the exand a soft metal plug inserted in the recess said pellet, as I, and for said nuthaving a cavity extending inward from one end wall of the nut, a pellet insertible in said cavity from itsopen end, anda plug also insertible through said open end and adapted to be pressedfintoposition behind said pellet'to lock the pellet in-engagement In witness whereof, I subscribe my signature, inthe presence of two witnesses. ,fl-PARIS" RMHINKLE; Witnesses;

HARRY A. GLARKE, FRANK. GI'BXUX.

and accessible from the exterior thereof, and Q a soft inelastic plug inset in such ca'vltyandf I tenor of "said member, a pellet in said recess 

